sunrpc_cache_notify(9)

🌸 NAME 🌸

sunrpc_cache_notify — bestie, this is the one that sends a netlink notification when a cache event happens ✨ (it's a kernel API manual page, iykyk 💅)

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🎀 SYNOPSIS 🎀

int sunrpc_cache_notify (struct cache_detail *cd , struct cache_head *h
, u32 cache_type );

Yeah that's the whole signature, no cap — three args, one int back 🫶

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✨ ARGUMENTS ✨

• cd — the cache_detail for the cache 💖 like, this is the cache you're repping, main character energy fr
• h — a cache_head entry. Ngl bestie, this one is unused — it's reserved for future use 🙈 so just... pass it and move on, it's giving placeholder
• cache_type — the cache type identifier, e.g. SUNRPC_CACHE_TYPE_UNIX_GID 🌈

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🔥 DESCRIPTION 🔥

Okay so here's the vibe: this function sends a SUNRPC_CMD_CACHE_NOTIFY multicast message on the "exportd" group — but only if any listeners are actually present 👀 like it's not gonna shout into the void for no reason, that's so considerate of it honestly.

And what does it give you back? It returns 0 on success, or a negative errno if things went sideways 😭 that's it, that's the whole function, she's simple and she slays 💅

Heads up bestie: that return is 0 for success and negative errno for failure — don't be out here checking for positive numbers, that's not the vibe 🚫

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🦋 SEE ALSO 🦋

• The kernel file ./net/sunrpc/cache.c — go read it, it's iconic 🧚
• sunrpc_cache_requests_count(9) 👑
• sunrpc_cache_requests_snapshot(9) ⭐

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And that's a wrap babes 🎀 this little gem lives in ./net/sunrpc, dated October 2026, and she goes by sunrpc_cache_notify(9) — periodt 💜 🫶